Fluid mixing valve



y 23, 1939- v F. c. LEONARD 2,159,033

FLUID MIXING VALVE Filed Oct. 31, 1936 I 2 Sheets-Sheet l 7 i 23, 1939. v F. c. LEONARD 2,159,033

FLUID IIXING- VALVE Filed Oct. 31,. 1936 2 Sheets-Sheet 2 1:5 fforvz 'y AT N OFFICE I'LUIDHIXING VALVE Application October 81, 1936,8011 No. 108,527

I a i a Y v c (cl. 236-12) 1 YMypresent invention relatearto thermostatic Mounted centrally in the central portion oi I ,valves, and'has particular reference) a novel the partition I], preferably by threaded engagev 'const ue d l bl'fi valve for hot and cold ment, is a tubular-flow member 2| having a cen- 'fluidsi" v tral'borefl which communicates with the inlet i Y "'It is theprincipal object of my invention to chamber I. through an opening in the par- 5 provide "a veryfsiinple and 'efl'ective' valve ar- I tition II, a suitable packing M being provided rangeme'nttor controlling the relative amounts between the base of the member I! and the parofhobgjdfoldjflujdiin: ordr-wobtaina mixed 'tition. The member 2| has an end portion 25 I fluid bf pr d termined temp ratur I extending laterally therefrom which is provided a fi m n 18 a further object)! my v nti t utiliz with diametrically opposite outflow openings 26, 1o

avno vel" construction of thermostatic material, so and 8 Sh TI is p v e threadedly ounted f "as-'t obtlaina moreieflective thermostaticact'ion. n t pa ti n w t a flan e m m lis addtherQbkc; f; my ti t prothis shell being-spaced from the tubular member :Jvide a valveconstruction that includesian auto- II to pr v n n r w passage 8 whi h l mfltlc shut-bfl, whgre bythe entire supply of both communicates at its lower end with the inflow v hotgnd cold water ma be h t n h ki chamber i9; suitable openings 28 and 30 are proit is a'n additional obJect-oi'Ymy invention to vided in the upp end o t Sh l the p n rovide a simplified construction of parts, for has 30 being in communication with the outflow facilitating the manuiacture and assemblyoff the n s 6. and he open n "be n nt got fi er-m x ,m f m g g m -.ous thereto and spaced axially therefrom, where- 20 VI o t I i I 1 by'the valve openings 29 and I0 permit flow oi with tfie 'abpt e g jd jtherfobjgctg advanhot and cold fluid therethrough from'the inlet 8 8' Q :I atures in view, my invention consists chambers into the mixing chamber as herein I 'arra n gement'bf pafls more fully 115- after described. The base of the flange 21a 1188 25 jc'losedfin the detailed descriptioni'ollowing; inits u p r fl e 3| Provided with W0 Spaced 25 jconiu'rjictionf with thejaecompanyin drawings, recesses 32, II for the purpose hereinafter de- 1 anemone 'speciiicallyfdeiined in the claimsiape l D ihereto; L slidably mounted on the upper end of the shell I'INI In the drawings. a a g j 21 is a reciprocating cylindrical sleeve valve 34,

80.11:. 1 vertical sectional elevation: through which h n outer flange i of u a fo m so I ithehovelvalve n t u g I i and an inner skirt portion 36 secured thereto Fig. 2 isafliront elevation thereof a I I a by a flanse II, which is provided with ports 38, I 111 31 a s the m m I the skirt portion being spaced from the sleeve f 4, is a section onth li e 4-4 of 1143, 1; valve to provide an annular-mixing chamber 3! p1 5 a re mu o s the which is-in communication with the two sets oi 35 line's Q jT 1 I 1 m4; I ports 1! and Il whereby reciprocating move- I i 81 5 5 M ja novenhermomflc ments of the valve increases flow through one 1 port and decreases flow through the other; the

, s i la k: v a a. I I if 8159 is} 1 3 m; 'l tim 'ofth novel m skirt 36 and the flange II are adapted to seat in I E s tgt1c"u n 1t formedmeregmm; I the-recesses 33 and, 82, a packing ring being 40 Fig, 10 1 ld l ig 't g I I mountedin recess 32 to seal outward fluid flow IReferring' tothedr'awing's;theriovelvalve conv hroughthe:ports I when the valve is in its i 's tructlon includes a housing III on which a cover extreme inwfl'l'd P o I j 'ltjli lisj'detachably' mounted; as for example; by The valve 3 is mounted in the pp po ti 4 5 n'i eansjof screws iii-the housing ll including' 01! the housing It, which is formed as a thermog I spaced partitions" li flin th lower: m ugn-th r static chamber 10 to receive mixed fluid from the of, a transversepartition 14; lateral partitions" mixin c am sh the p ts 0. t mixed f li,f l6 ;-and"Z partitioniL which -deiine'an inlet fluid thenpassing to the outlet chamber 20; a chamber II for hot 'iiuid and an inlet chamber novel-thermostatic element ll is mounted in the "I for cold'i'luid, the inlet-:eh ambers -having the. --therinostatic chamber with its lower end secured usualfthreaded pipefreceiving-openings, and-tan to valve 34, as by means of rivets 42, the outlet chamber' I. positioned laterallyoithe-pap' other end of the thermostatic element being se H titionfiil; andin the same plane as the two inlet cured to a cap 43 which is internally threaded 1 chambersJ'nd-provided with a standard threaded and into which an externally threadedend H receiving outlet-"opening of a control vstem 45 extends. The control stem is 2 has a flange 46 which is seated in a boss 41 in the upper end of the cover II, packing 48 and a gland nut 49 serving to lock the flange 46 against longitudinal movement, but permitting rotation thereof.

The cap 43 has a laterally extending plate member 50 which has spaced openings therethrough, adapted to be mounted on cooperating spaced pins 5| which are threaded so as to de pend from the inner surface of the cover ll.

' A handle 52 of standard form with a pointer arm 53 is mounted on thee'nd of the stem 45 in any desired manner, a preferred construction.

including a lock nut 54 threadedly engaging a reduced non-circular end of the stem 45 which passes through a similar non-circular opening in the end of the handle 52.

Referring now to Figs. 8 to 10-, the thermostatic element 4| consists of a series of U-shaped thermostatic sections 42, each of which consists of' an outer layer of metal 43 havingv a high coemcient of expansion and an inner layer of metal 44 having a relatively-low ooeflicient of expansion, the sections being integrallyjoined together, as by riveting or by being welded together. A'preferred construction includes the positioning of small strips of thermostatic metal in adjacency as shown in Fig.8, the two metals being alternately reversed as indicated at 430 and 44a, and the strips thenbeing welded together. Since the welding decreases the temper, the composite strip is then rolled, which works the metal so as to increase its elasticity to the desired degree; the thermostatic strip isthen bent to the form in dicated in Fig. 10, thus obtaining a thermostatic strip of small size having great'power .in response to temperature change. 'All the valve parts are preferably of bronze, but may be of other suitable metal.

Referring now to Fig. 1, when the handle 52 is turned a predetermined arc the sleeve 43 is axially shifted to set one'end of the thermostat 4|, the valve 34 assuming a positionso as tapermit a controlled flow of hot and cold fluid through the ports 29 and 30. If the temperature of the mixed fluid changes, the thermostat moves so as to increase the amount of one of the fluids and decrease the amount of the otherfluid, thus bringing the temperature of the mixed fluid back to its initial value. Irthe handle -52 be turned back, the sleeve 43 will move downwardly suiflciently to bring the skirt 36 and the flange 35 into thev annular recesses 33 and 32, thepacking in recess32-shutting off the supply offluid to the mixing chamber; the valve 34 also closes the upper port 30 when in this position so as to fully cut oil the supply of hotfluid. I

While I have described a specific constructional embodimentof my invention, it'is evident that changes in the construction of the parts, in the material used, and in the size and relative arrangement of the parts, may be made to'suit the requirements for different mixing" valves, without departing from the spirit and the scope of the invention as deflned in'the appended claims. I claim:

'1. In a mixing valve, a housing having an inlet chamber for hot fluid, an inlet chamber for.

ings for said bore and said space,a sleeve valve device mounted for reciprocating movement on said shell and movable to control outflow from 'said openings, and having a mixing chamber for receiving the fluid from said openings, a thermostatic chamber in communication with said mixing chamber and said outlet chamber, and thermostatic means in said thermostatic chamber responsive to change in temperature of the fluid I therein to move said valve device.

2. In a mixing valve, a housing having an inlet chamber tor hot fluid, an inlet ch-amber for cold fluid, and an outlet chamber for mixed'fluid, a member having a bore communicating with one inlet chamber, a shell spaced from said member,

the space between said shell and said member communicating with the other inlet chamber,

said member and said shell having outflow openings forsaid bore and said space, a sleeve valve device mounted for reciprocating movement on said shell and movable to control outflow from receivingthe fluid from said openings, a thermosaid openingaand' having a mixing chamberi'or static chamber in communication with said mixing chamber and said outlet chamber, thermostatic means in said thermostatic chamber responsive to change in temperature oi! the mixed fluid therein to move said valvedevice, and means for setting said thermostatic meansto'obt-ain a predetermined temperature ofthe mixed 3. .In a mixing valve, a housing having an inlet said openings, and having a mixing chamber for receiving the fluid from said openings, a thermo static chamber in communication with said mixirig chamber f and with said outlet chamber,

- means for shutting oil flow from said mixing chamber to said thermostatic chamber, and

thermostatic means in said thermostatic chamber responsive to change in temperature of the fluid therein to move saidvalve devicel,

4. In a mixing valve, a housing having an inlet chamber for hot fluid, an inlet chamber for cold fluid, and an outlet chamber for mixed fluid, a member having a bore communicating with one inlet chamber, a shell spaced from said member,

the space between said shell fandsaid member communicating with the other inlet chamber, said member and said shell havingoutflow openings for said bore and said space, a sleeve valve device mounted for reciprocating movement" on said shell andmov-able to control outflow from said openings, andfliaving a mixing'chamber for receiving the fluid from said openings,'a thermostatic chamber in communicationwith said 'mixing chamber and with said outlet chamber, means for shutting off flow from said mixing'chamber to said thermostatic chamber, thermostatic means in said thermostatic chamber responsive to changein temperature or the fluid therein to move saidtvalve device, and means for setting said thermostatic means to obtain a predetermined temperature of the mixed fluid.

5. In a mixing valve, a housing having an inlet 5 chamber'for hot fluid, an inlet chamber for cold fluid, and an outlet chamber for mixed fluid, a

' memberhaving a borecommunicating 'withone ,;s aid;she1l and movableto ,control outflow from said "openings, and having amixing chamber for receiving the fluid from said openings,a thermo-' device" mounted for reciprocating movement on static chamber incommuriica'tion withesaid mixtemperature of the' fl -valve device. I

,mg chamber and with said; outlet chamber, flgmean's for shutting ofl flowthrough the hot fluid foutflowopening,andqthermostatic means in said thermostatic chamber responsive to change in I n Ina mixingfvalve'a housing having an inlet" chamberffor hot tluid, an inlet chamber for coldfiuid, and an" outlet chamber for mixed fluid, a

member havinga bore communicating with one inlet chamber, a shell spaced from said member,

"the space between saidshell and said member communicating with the other inlet chamber,

said member and said shell having outflow openings for said bore and said space, a'sleeve valve device mounted for reciprocating movement on said shell and movable to control outflow from said openings, and having a mixing chamber for receiving the fluid from said openings, a thermostatic chamber in communication with said mixing chamber and with said outlet chamber, means for shuttingtofl flow through the hot fluid outflow opening, thermostatic means in said themestatic chamber responsive to change in temperaturefot theiiuid therein to move said valve device, and means for setting said thermostatic means to obtain a predetermined temperature of the mixedfluid.

msnnmcx c. LEONARD. w 

